791587949785198 has 8 divisors (see below), whose sum is σ = 1187383403736792. Its totient is φ = 395793481872936.

The previous prime is 791587949785187. The next prime is 791587949785231. The reversal of 791587949785198 is 891587949785197.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×791587949785198² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244499565 + ... + 247715992.

It is an arithmetic number, because the mean of its divisors is an integer number (148422925467099).

Almost surely, 2^{791587949785198} is an apocalyptic number.

791587949785198 is a deficient number, since it is larger than the sum of its proper divisors (395795453951594).

791587949785198 is a wasteful number, since it uses less digits than its factorization.

791587949785198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493019666.

The product of its digits is 115221657600, while the sum is 97.

Subtracting 791587949785198 from its reverse (891587949785197), we obtain a palindrome (99999999999999).

The spelling of 791587949785198 in words is "seven hundred ninety-one trillion, five hundred eighty-seven billion, nine hundred forty-nine million, seven hundred eighty-five thousand, one hundred ninety-eight".